Gun-lock for automatic firearms



J. DUFFEK.

GUN LOCK FOR AUTOMATIC FIREARMS.

APPLICATION man AuG.24, 1920.

1,387,369, Patented Aug. 9,1921;

2 SHEETS-SHEET 1.

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Patented Aug. 9, 1921.

APPLICATION FILED AUG.24| 1.920.

2 SHEETS-SHEET 2- A.5u/en or @wwe /w .numana/M JOSEF -DUEFEKfor' sfrutta, urrnnfaus'rnm,"AUSTRIAQASSIGNOR TOJTHE Finiti 0Fv OESTERREIGHISGHErWAFFENFABRIKSGESELLSQHAFT,20F jsTEYn, UPPER A Us- Be it known that I, J'osEF I' zen of the Republicfof- Austria, and residzor ' for patent ing at Steyr, Upper Austria, Austria, haveI invented certainneyvand useful Improve, nientsfinv 'Gun-Locks for Automatic Fire'- ,arms, for' Which'I havelfiled applications asV follows Austria, application for patent' lile'd ony May 22nd, 1918; Austria, application for atent of Vadditionflled Febr. 7th, 1919;

ungary, application for patent filed on May 22nd,;1918; Hungary, application for' patent of addition filed Febr.- 17th,. 1919; GermanyV application for patent filed o n May'25th, 1918; Germany, application for atent of addition filed May 13th, v1919; Y-ermany,

application for model of utility iiled on May th, 1918, and on Febr-13th, 1919; Czecho- Y Slovakia,v applicationfforv patent filed onk Aug. 12th, 191 8 Czechoslovakia, application of addition filed Sept. 12th, 1.919;

L Switzerland,application for kpatent liled on i April 5th, 1919 France,` application for patent led on for patent iiledlonl May 3rd, 1919;

jection, which'slidesin aguidefof the ger by a link, in order .to

The present finyenuareiatesgto. :a gunlock for automatic 'are-arms and essentiallyV consists in' thattlie` backfportionof the pre'ssfleyer, erating the h.

fire-A arm-casingon pressingthe trigger yThe guide terminates in a depression,: into which the,V projection ofYK 'thepress-leyer "enters,

whereby the latter releases the strikerl which is now caused to jump forward and fire the cartridge by means ofthe. liiing 'Preferably the press-leyerjis jointed to the trigeshortenY thef' fbaok i ward movement ofthe said*trigger; g

,cocked position.

The ac'oompanv g 'drawi gs according tothe present. invention.- l

Figure 1 shoyvs in a., 'part-sel View a pistolwith'the hammer inthe un# Fig.` 2 illustrates diagrammatically theVK specication of Letters Patent. Y

for patent ledon April 29th,'.

actuated the V trigger and op.- mmer, is providedwi'h a pro-"- illustrate' two preferable"constructions .of the gun-lock otional sideposi-tions of thelivarious,parts1of-`thefgunlock oncooking.l the hammer'by' hand` or Whenfiring automatically. r i iFlg. 3 isa diagrammatic viewlof the gunlock, on cooking the hammer by means of the-trigger. .1

- Fig. 4 isa plan-view of the press-lever Figi-5 a plan. Viey7 of the link. Fig. Gshows in part-sectional modified construction of the'pi'ston'l with the hammer inthe uncocked'position.

, Fig; 7 f illustratesA 'dagrammatl'canyV the.,

. {Patentea Auge, 1921.1

- Application nieafaugugt 24,1920. seria1Nq.4o5,7se. Y I f side-view a Y' Y positions of the Various parts lof this modi- 5 lied gun-lock on cockingthefhammer by v` 7o hand or when firing automatically. I

Fig. 8 isa diagrammatic View ofthe modilfied gun-lockon cockingrthe hammer bythe trigger;

Fig aiuustrates a reargviewiofifh@ @ma plate with' the vactuating member, and f' j f Fig.. i10 a front. View` 1 of the?"said.Il nember.Y

In the construction of{the 'gunlock, illuis.y

`trated in Figg'sQ 11- 5 the letter ai designatesl the casingV of the yfirearm,',carry-il'ig the breech Vand the barrel 0,;d is the hammer pivoted on a pin e, secured inr thev casing a', Y and'fthe''main-spring.oftherefarm.u The y hammer is 'provided with two' cooking-rev cesses 1 and' 2,'. the upper recess 1 being 1released bythejtrigger ontcocking the ham-` mer` (Fig. f 3)`,1'While yon 'cooking` the; hammer' Aal by handlor Wheniring automatically, the` Y.

triggerlpaW-l g'is brought Vinto engagement?V with the lowerrecess 2 spring L (Fig. 2)

With'a projection y', which slides Vin a guide 7c of the casing 'ca- This guide Ic' terminates bythe action ofa ,i *19o The backofthe press-levert isf provided the" striker d. Q'.Ehefpress-leyer c' terminates ina; lf-zross-arm M Whioh actua-tes the striker j dV `ora hairtrigger fri hingedtothe. stri'keri v The fpressLle'ver z'Y is movably kc .onnected to the trigger; Q'rby meansff a' link` p, arrangedm agroovel 'Q Vof.the trigger.:Yv The trigger 0;'

andn w is theV firing-pin spring.

V'The actionof' the4 gun-lock 'isfurnished With'anfextension la", which is', acted upon bythe solid en dof-a springs and' returnsthe trigger tothe normal'posi'.-Y Y Y .press-levert is Vcaused to-fmove rearwardly 1 cess 2;-this movement being illustratedin or rwhen tiring, automatically, vthe hammer is turned down so far, until they spring it will-press the trigger-pawl g into there#` cess 2 of the hammer d. kThe lower arm Voi Ithe hair-trigger 711,' which latter is hinged t'o and 'works in agroove of the hammer, Vwillf f now 'lie below the endy ofthe'trigger-p'awl 'and the shorter. upper arm of the said smallp.

in front of theV trigger 11,V will `be positioned recess l ofthehammerd. Y

On pulling the trigger. oV backward, thev by Ythe link and thereby cause the projection j ofthe press-lever to slide in the. guide k of the casing` a. InV consequence of'this* movement the cross-,arm m will act, against the shorter larm of the hair-trigger 'n andV cause' the latterto be rotated-about its pivot. Thereby the lower arm of the hair-trigger@ 'will act againstI the trigger-pawl. g, lift the latter Vand disengage` theY same from the redash and dotted linesin" Fig. v2.' Atthat guide c. Thereby the press-lever z' is raised,

crossfarm fm, of `thepress-lever 1I rests lin; the` recess land againstltheshortarmof `the hair.

- movementthe -recessll`V has reached its' nal `positionandthe projection y" of theV press lever/1I has entered the depression Z of the itscrossearm m releases the'hammer and the i latter jumps forward and lstrikes kthe firing pint. v

On cooking the hammer by the trigger, the

trigger fr1"the latter adapting itself to the shape'.ofthe'striker.A y. On pullingithe trigger. 0 backward, the press-lever/isimoved rear:V

wardlyby the link p and cocks "the hammer d. VTherebythe projectionjV of thepress.- lever 1I will slide,I in thefguide 'kof thecasing a, until the projection j rests in the position illustrated in Fig. 3 and the, projection j kfully .enters vthe Vdepression jZ. TheV cross- Varnflfm of thev press-leverlooses litsfholdin the recess lof the'hammer, wherebyjthe latteris Adisengaged land jumpsf-forwardz- In this wcase the hairftrigger fn, doespnot come into action:V I lj f Inthe modified constructionvofthe gun'- klock, illustrated in'Figs. V6410, the vrear-'portionofthe casing a is provided with a coverplate 3 having ,a Suitable hole for the recep` tionof the pivot e of. thez-hammerd. 'F urtherthe coverplate is furnished with asuitablerecess forthe location of an actuating underneathfthe rpress-levert', which is forced member 4, which is-movable around a-.pivot -5.- Theisaid member 4 is 'provided with ai projection 6, jwhich'` on" tiring yis operated by` a recess-7 ofthe y-han'irner al. -Furtherthe- `member 4 `is provided with a Vforwardlyv extending extensionS, whichis roundedoffv'at thel top;y Y. On vtiring, ythe projection 81 comes downward by aqspring9. Y I.

They actionof 'the gunl'o'ck is as followjs g On tiringY the;A fire-arm, thefhammcr d Ythe v press-lever. from the `hammeni Y jumpsfffward, the recess vof, the gime win take the member. .4. Wthit by means .0f `.the projection 6,` whereby therounjded-'of exten;v

sionA 8 comes underneath theffpress-leyer z' lifts the same and thereby. causes an easy and" sure disengagementof the press-lever from` the recess l of'th'ehammerd.,

Whatlclaim is: 1. A"'gun'lock comprising in combinatiomr a tri ger-,sa press-lever connected to the said tri er, a

projection Von the press-lever, a gul e'fatf-'V tachedfto the firearm,v inl which said projeci y tion is adaqtedl to sli de,aj depression'in the4 Vsaid guide into whichftheprojectionof the said press-lever,` may enter, and a',V harlingen.'Y

pivo'tallyY connected vto- )the fire-arm Fandn i adapted'fto be movedgto@ cockedffposition the vsaid press-lever, whereby on-the entry of, Y

f guide thehammer is 'releasedv by thefpressflever,gand sprngmeans acting ousaid hams. Y mer for fca'usingthe ylatter lwhen;released the said'projection into the depression ofthe;

from the kpress-lever to jump .fprward'vand fire the cartridge.f 1" j comprising in combination, a trigger,Jalink` pivotally connected ltoV the said trigger, a

pressflever pivotallyy connected tothe `,said-5,11. Y ylink, a projection onthepress-lever, aiguille attached to theV fire-arm in -which Ythe said projection is adapted to slide, a 1 depression inthe saidguide into Awhichthe projectionof the said presslever mayenter; andgalyspr-ing pressed hammer .pivotally' connected to'rthe Vfire-arm and Vadapted toi be moved to cocke'd'f` 'position bythe said press-lever, -wherfebyron` Y thel lentry of the said levereprojection into j 'thedepression of the guide the hammerrizsleased bythe press-lever yand caused tojjump orw'ardfand ,to .fire the cartridge. i f- 3; .gun-'lockffor Qautomatic" -firre-all'tllr;` Vcomprising in combination, a gtrifgger, a;k press-'lever Ai connected ,iT/O1; the-."Sd triggerff a halllllleri Vpivotally' connectedv itoi/the fire army and;l adapted to be; f engaged j and 1 op.` erate'd by ythe said 'press-*'lever, aicover-plate locatedv on the fire-arm,J an `actuating-memf berk pivctally Vsecured tothe said coverplater` the said actuating-member being' provided with aprojectionand a roundedfof extension, wherebyongpulling the trigger the said; 1. projection f isyengaged' by thehammer y the rounded-offV extension f slides underneath: the said press-lever, lifts the latter and causes, anv easy-and sure` disengag'ement,ofv

4.v A gun-lock jfor. j automatic h`fire-ja v comprising-incombination aftrigger, a link j l V1215. press-lever pivotally `:connected to the a said if: link, afhammer pivotallyJ--connectedgtogthe fre-armand adapted lto-beengagedandopf Verated by the said press-lever,ja cover-plate.

pivotally connected to the. said trigger, a;

located .onthe hrearm, an, actuatingvmemlfor automatic` i kcomprising inf combination, ra trigger, a press-lever connectedV to the said trigger, aV projection on theJ press lever,fa.,guide' attached tothe fire-farm in which Vthe said ber pivotally` secured. the `said cover-i plate, the said actuating-member being provided with a projectionl and a rounded-'o extension7 whereby'v on lpulling the trigger the said projection is engaged'by the ham mer and Vthe `rounded-oli' extension slides underneath the 'said press-lever, lifts the,v -latter and `causes an easy and sure disenr gagementVv of thel 'press-lever from( the hammer.'

5. A ygun-lock for automatic fire-arms,

projection is adapted to slide, a depression in the said guide into which the, projection- Y of the said press-.lever mayenter, a hammer pivotally! connected to the fire-arm and adapted to be" engagedandoperated by the f said press-lever, a cover-plate located'on the nre-arm, an 'actuating-member pivotally se-y cured'to the VsaidYcover-plate, the said actuating member being providedjwith a projectionv and a rounded-'offv extension, Whereby on pulling -thetrigger the projection of the said actuatingmembergis engaged by the hammerland the vrounded-offl extension slides Vunderneath the saidypresrs-leven'lifts Vthe latter, thereby causing the projection ofthe vsaid pressflever to "enter the 'depression of thel said guide and effect an easy andjsure I p disengagement of ther press-lever from the' f hammer. Y 6. gun-lock for automatic fire-arms, comprising in'combination, a trigger, a link attachedto the re-arm'sin Whichthe saidy of the said' press-lever may enter,` a hammer v 'pivotally connected to the, fire-arm j and l' adapted to be engagedzand operated by the*k said v press-lever, `a covf'zr-plate located on the ire-arm, an actuating-member pivotally j vsecured'to the Vsaid cover-plate, the said` actuating-member being provided` With a projection and a rounded-oil" extension, whereby on pulling the trigger the projection ofthe said vac'tuating-meniber is engaged by the hammer and the rounded-oitl g l extension slides underneath thesaid presS-' Y lever,l 'lifts the latterj thereby causing the projection of the said press-lever to jenter lthe'fdepression,'in the saidiguide and effect of the y.

an easy and sure n disengagement press-lever from the hammer.

Y In testimony Whereot have hereunto setL JOSEFKV DUFFEK; Y l

my hand. 

